Posts Tagged ‘electronic stability control (EPS)’

Bourns Announces Combined Torque and Angle Sensor for Electric Power Assisted Steering Applications (EPAS)

May 11, 2011

Bourns® Torque Angle Sensor
(Download Hi-Res Image)

RIVERSIDE, Calif., May 10, 2011 – Bourns, Inc., a leading manufacturer and supplier of electronic components, today announced a new combined torque and angle sensor designed for Electric Power Assisted Steering Applications (EPAS) and other automotive systems. The new combined sensor provides torque and steering angle measurement in a single package, replacing two discrete sensors for significant space and cost savings. Based on Bourns’ Hall Effect (HE) non-clockspring torque sensor technology, the combined sensor uses driver input to measure the steering torque while simultaneously converting the rotation speed and direction of the steering wheel. The torque portion of the sensor is designed specifically for EPAS, and the steering angle signal can be used in a variety of automotive systems including Electronic Stability Control (ESC), Advanced Front Lighting Systems (AFLS), Navigation, and Assisted Parking Systems.

“Bourns has more than 14 years experience in delivering proven steering angle and torque sensors, and is committed to continued innovation,” said Johneric Leach, product line manager for steering and vehicle stability sensors at Bourns. “Using this experience to combine technologies into a single functional package demonstrates our innovation, and Bourns has made a significant investment in extensive trials and testing to ensure this product meets customer expectations and next-generation automotive requirements.”

Bourns offers several variations of its new combined torque and angle sensor to meet customer requirements. Variations include dual and single channel options on the torque portion depending on redundancy requirements, and the steering angle sensor can support incremental or absolute measurement. The new Bourns® torque and angle sensor is suitable for column or rack mounted EPAS. For rack-mounted applications, the combined sensor has been designed to sustain temperatures from -40°C to +125°C.  The new device provides CAN steering sensor output in addition to an analog torque signal. The torque sensor output can also be configured to support CAN, analog, PAS4, PSI5 and PWM outputs.

Bourns will make its combined torque and steering angle sensor available to a select group of customers. Product validation is currently being conducted with two of the world’s largest EPAS suppliers.

About Bourns
Bourns, Inc. is a leading manufacturer and supplier of automotive sensors, circuit protection solutions, magnetic products, microelectronic modules, trimming and precision potentiometers, panel controls and encoders and resistive products.  Headquartered in Riverside, CA, Bourns serves a broad range of markets, including telecommunications, computer, industrial, instrumentation, automotive, consumer, non-critical life support medical, audio and various other market segments. Bourns® products are manufactured according to ISO-9000 standards under Six Sigma quality programs. Bourns® automotive products are manufactured in accordance with the TS16949 standard. Additional company and product information is available at the company’s website at www.bourns.com.

Bourns® and the Bourns logo are registered trademarks of Bourns, Inc. and may be used only with the permission of Bourns and proper acknowledgement. Other listed names and brands are trademarks or registered trademarks of their respective owners.

Bourns Announces Customized Steering Angle Sensors

September 1, 2009
Bourns Steering Angle Sensor (Download Hi-Res Image)

Bourns Steering Angle Sensor (Download Hi-Res Image)

Riverside, Calif., September 1, 2009 – Bourns, Inc., a leading manufacturer and supplier of electronic components, today announced the introduction of the company’s latest generation of semi-absolute and absolute, non-contacting steering angle sensing technology.  The new technology supports low cost solutions that require accurate steering feedback for interfacing with automotive applications such as electronic stability control (ESC), active suspension, and electro power steering (EPS). The customized steering angle sensors can also be used with electronic self parking (E-Park), lane departure warning (LDW), and advanced front lighting systems (AFLS) applications and are based on anisotropic magnetoresistance (AMR) technology. The electronics used in Bourns’ customized steering angle sensors can be packaged to facilitate reduced sensor dimensions as small as  60 mm x 78 mm x 14 mm and printed circuit board (PCB) dimensions as small as 50 mm x 20 mm.

“Bourns is pleased to offer its automotive customers customized steering angle sensors to fit their specific needs,” said Johneric Leach, product line manager for steering and vehicle stability sensors at Bourns. “The new sensors are based on AMR technology for a more robust design, which allows the devices to be less sensitive to temperature fluctuations, shock and vibrations. Thanks to AMR technology, the sensors can also withstand large variations in the gap between the sensor and magnet.”

The new steering angle sensors feature a Bourns-patented device that minimizes the hysteresis associated with the steering column’s mechanical tolerances and is available in either single or dual redundant designs. The customized sensors are typically equipped with a CAN interface to allow resolutions close to 16 bit and accuracies down to below 0.5 degrees. The sensors also feature a complete self-diagnostic capability and a customized design is available that supports full active steering.

Technical Specifications

Type Specification
Angular Position Range ± 720 ° (Truck option ± 1440 °)

Resolution 0.05 °

Absolute Linearity + 0.5 °

Angular Speed Range ± 2000 °/s

Resolution 4 °/s

Data and Control Interface CAN 2.0A (option CAN 2.0B) 500 kbit/s

Data rate 10 ms (option 5 ms)

OEM specific CAN handlers optional

Power Supply Voltage range 8 – 18 V

Current consumption 50 mA

No idle current required

Temperature Range – 40 °C to +85 °C degrees

(option – 40 °C to +125 °C)

Availability and Pricing
The new customized steering angle sensors can be ordered for manufacturing to meet specific customer requirements. Pricing is based on the complexity of the design and number of sensors ordered. The Automotive Division of Bourns has the capability to package and develop other customized solutions based on customer requirements and specifications. For additional information about Bourns Automotive Division’s products and services, go to http://www.bourns.com/Automotive.aspx.

About Bourns
Bourns, Inc. is a leading manufacturer and supplier of automotive sensors, circuit protection solutions, magnetic products, microelectronic modules, precision potentiometers, panel controls and encoders and resistive products.  Headquartered in Riverside, California, USA Bourns serves a broad range of markets, including telecommunications, computer, industrial, instrumentation, automotive, consumer, non-critical life support medical, audio and various other market segments. Bourns products are manufactured according to ISO-9000 standards under Six Sigma quality programs. Additional company and product information is available at the company’s website at http://www.bourns.com/.

Bourns® and the Bourns logo are trademarks or registered trademarks of Bourns, Inc. and may be used publicly only with the permission of Bourns and require proper acknowledgement. Other listed names and brands are trademarks or registered trademarks of their respective owners.